Plantation inventory Unit was established in 1993 with the clearcut mandate to carry out inventorisation of the existing Teak plantations and to assess the productivity of the Teak plantations so as to estimate the total growing stock and it's value.

Methodology

1. Phase-I data of Teak plantations raised from 1970 to 1987 and Phase II data of Teak plantations raised from 1988 to 2010 are being taken for measurement and inventorisation. Phase-I data of Teak plantations raised from 1970 to 1987 and Phase II data of Teak plantations raised from 1988 to 2010 are being taken for measurement and inventorisation.

2. Permanent sample plots of size 0.25 ha (50 mts × 50 mts) with sampling intensity of 1% were laid out in the Teak plantations by random sampling method to act as representative.

3. Measurements as well as inventorisation of growing stock are carried out in each of the sample plot so as to get a clear cut idea about the changes in the growing stock as a result of the thinning carried out , transition from lower girth class to the higher girth class, changes in the no of trees remaining etc.

Achievements

1. The first measurement of 2552 sample plots were carried out in the year 1995 to 2000 over an area of 89346.196 ha. The total growing stock was to the tune of 25.10 lakh cmt and it's valuation based on average sale price obtained in the auctions during the year 2000 was Rs 1403.65 crore.

2. The second measurement of 3463 sample plots were carried out in the year 2001 to 2005 over an area of 90239.953 ha. The total growing stock was to the tune of 28.36 lakh cmt and it's valuation based on average sale price obtained in the auctions during the year 2005 was Rs 1640.04 crore.

3. The third measurement of 3643 sample plots were carried out in the year 2006 to 2010 over an area of 89572.172 ha. The total growing stock was to the tune of 31.60 lakh cmt and it's valuation based on average sale price obtained in the auctions during the year 2010 was Rs 3142.85 crore.

4. The fourth measurement of 3270 sample plots were carried out in the year 2011 to 2015 over an area of 70010.795 ha. The total growing stock was to the tune of 25.10 lakh cmt and it's valuation based on average sale price obtained in the auctions during the year 2015 was Rs 4620.75 crore.

5. The fifth measurement of 2791 sample plots were carried out in the year 2016 to 2020. over an area of 54829.57 ha. The total growing stock was to the tune of 20.68 lakh cmt and it's valuation based on average sale price obtained in the auctions during the year 2020 was Rs 5112.73 crore.